package com.cyx.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cyx.reggie.dto.DishDto;
import com.cyx.reggie.entity.Dish;
import com.cyx.reggie.entity.DishFlavor;
import com.cyx.reggie.mapper.DishMapper;
import com.cyx.reggie.service.DishFlavorService;
import com.cyx.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

/**
 * @author 陈彦西
 * @date 2024/7/8 下午4:20
 */
@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish>implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;
    /**
     * 新增菜品，同时保留对应口味数据,涉及到多张表的操作
     * @param dishDto
     */
    @Transactional
    public void saveWithFlavor(DishDto dishDto){
        this.save(dishDto);
        Long dishId = dishDto.getId();//菜品id
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
       flavors= flavors.stream().map((item)->{
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());
        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    public DishDto getByIdWithFlavor(Long id){
        //查询菜品基本信息，从dish表查询
        Dish dish = this.getById(id);
         DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        //查询当前菜品对应的口味信息，从dish_flavor查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId, dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);
        return dishDto;

    }

    /**
     * 修改菜品
     * @param dishDto
     */
    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);
        //清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId, dishDto.getId());
        dishFlavorService.remove(queryWrapper);
        //添加当前提交过来的口味数据--dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();
        dishFlavorService.saveBatch(flavors);

    }

    /**
     * 删除和批量删除
     * @param
     */
//@Transactional
//public void sale(List<DishDto> dishDtos) {
//    // 遍历DishDto列表
//    for (DishDto dishDto : dishDtos) {
//        // 创建一个只更新status字段的条件构造器
//        LambdaUpdateWrapper<Dish> updateWrapper = new LambdaUpdateWrapper<>();
//        updateWrapper.eq(Dish::getId, dishDto.getId()).set(Dish::getStatus, dishDto.getStatus());
//        // 使用updateWrapper来更新dish表中的status字段
//        this.update(updateWrapper);
//    }
//}

    @Transactional
    @Override
    public void deleteWithDish(List<DishDto> dishDtos) {
        for (DishDto dishDto : dishDtos) {
            LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(Dish::getId, dishDto.getId());
            // 执行删除操作，传入构建好条件的queryWrapper
            this.remove(queryWrapper);
        }
    }
    }
